Holocene evolution of Apalachicola Bay, Florida

Osterman, Lisa E.; Twichell, David C.; Poore, Richard Z.

doi:10.1007/s00367-009-0159-1

Cited by 16 publications

(4 citation statements)

References 11 publications

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“…A description of the core collection, processing, and cataloging are summarized by Twichell et al (2009). Faunal analysis and Accelerator Mass Spectrometer (AMS) 14 C dating of the cores and a reconstruction of the Holocene depositional environments in the region are presented by Osterman et al (2009).…”

Section: Methodsmentioning

confidence: 99%

“…A large valley that was cut during the last lowstand of sea level extends southward from the present Apalachicola River delta (Schnable and Goodell, 1968;Banister, 2008;Osterman et al, 2009) and connects with a lowstand valley that lies beneath the present barrier island and inner shelf (Donoghue, 1993;McKeown et al, 2004). The seismic data show the confluence of several tributaries with the main valley under the central part of Apalachicola Bay (Fig.…”

Section: Shallow Stratigraphy and Holocene Evolutionmentioning

confidence: 99%

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Geologic controls on the recent evolution of oyster reefs in Apalachicola Bay and St. George Sound, Florida

Twichell

Edmiston

Andrews

et al. 2010

Estuarine, Coastal and Shelf Science

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a b s t r a c tApalachicola Bay and St. George Sound contain the largest oyster fishery in Florida, and the growth and distribution of the numerous oyster reefs here are the combined product of modern estuarine conditions in the bay and its late Holocene evolution. Sidescan-sonar imagery, bathymetry, high-resolution seismic profiles, and sediment cores show that oyster beds occupy the crests of a series of shoals that range from 1 to 7 km in length, trend roughly north-south perpendicular to the long axes of the bay and sound, and are asymmetrical with steeper sides facing to the west. Surface sediment samples show that the oyster beds consist of shelly sand, while much of the remainder of the bay floor is covered by mud delivered by the Apalachicola River. The present oyster reefs rest on sandy delta systems that advanced southward across the region between 6400 and 4400 yr BP when sea level was 4e6 m lower than present. Oysters started to colonize the region around 5100 yr BP and became extensive by 1200 and 2400 yr BP. Since 1200 yr BP, their aerial extent has decreased due to burial of the edges of the reefs by the prodelta mud that continues to be supplied by the Apalachicola River. Oyster reefs that are still active are narrower than the original beds, have grown vertically, and become asymmetrical in cross-section. Their internal bedding indicates they have migrated westward, suggesting a net westerly transport of sediment in the bay.Published by Elsevier Ltd.

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Section: Methodsmentioning

confidence: 99%

Section: Shallow Stratigraphy and Holocene Evolutionmentioning

confidence: 99%

Geologic controls on the recent evolution of oyster reefs in Apalachicola Bay and St. George Sound, Florida

Twichell

Edmiston

Andrews

et al. 2010

Estuarine, Coastal and Shelf Science

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“…Many rivers and streams have contributed sand to the Gulf Coast, but most of these flow through valleys flooded during the Holocene, so the sand transported by these rivers has been sequestered in estuaries that occupy these valleys (Anderson & Rodriguez, 2008; Osterman et al., 2009). The Florida, Alabama, and Mississippi coasts receive little direct sediment supply from rivers.…”

Section: Cause(s) Of the Reversal In Coastal Barrier Evolutionmentioning

confidence: 99%

Unprecedented Historical Erosion of US Gulf Coast: A Consequence of Accelerated Sea‐Level Rise?

Anderson,

Wallace,

Rodriguez

et al. 2023

Earth's Future

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Most of the US Gulf Coast is composed of barrier islands, peninsulas, chenier plains, and mainland beaches that are the main line of defense for wetlands, estuaries, and urban and industrial centers from rising sea level and severe storms. These wave‐dominated shorelines are currently experiencing widespread erosion. Using newly acquired and existing results from 13 sites spanning south Florida to south Texas, we compare shoreline migration rates during the late Holocene (∼−4000 to 1850 CE) with historical changes since the mid‐19th century. The records show an overall trend of seaward growth during the late Holocene followed by landward migration or a decrease in the rate of growth during historical time. Diminishing offshore sand supply, human alteration of rivers and coastal sand transport, and severe storms have contributed to this change in shoreline trajectory, but their influence has been mostly limited in extent. The most likely cause of this reversal from coastal stability and growth to widespread shoreline retreat is the dramatic historical increase in the rate of sea‐level rise over the past century.

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“…The first one locates at the estuary of Apalachicola River, which can be found around the center of the map. On one hand, the barrier islands separate the lagoon from the Gulf of Mexico, which contribute to an advantageous environment for sediment maintenances [68]. On the other hand, the Apalachicola River is continuously providing fine-grained sediments around its estuary and therefore has become a major resource of tidal flat accretions [69].…”

Section: Tidal Flat Dynamicsmentioning

confidence: 99%

The Spatiotemporal Characteristics and Dynamic Changes of Tidal Flats in Florida from 1984 to 2020

Liu

2021

Geographies

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Tidal flats are playing a critical role in the coastal environment, which mainly rely on satellite images to map the distribution on large spatiotemporal scales. Much effort has been made to monitor and analyze the spatiotemporal dynamics of tidal flats in order to provide worthwhile references for scientists and lawmakers. Instead of considering the dynamics of tidal flats only, this study implemented a series of comprehensive analyses on the tidal flats along the coast of Florida during the period 1984–2020. First, the analyses on the pixel level examined the spatiotemporal characteristics of tidal flat dynamics and the interactions with lands and permanent water. Second, the contiguous pixels of tidal flats were assembled as objects, and two geometric attributes were calculated and used to track the temporal patterns of tidal flat dynamics on this level. Finally, the Mann–Kendall test and Sen’s slope estimator were applied to identify and quantify the significant trends of tidal flat dynamics on the two levels. The results highlighted the differences in tidal flat distributions and dynamics between the Gulf Coast and Atlantic Coast, which further verified effective GIS representations and analyses that could be applied to other coastal studies.

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Holocene evolution of Apalachicola Bay, Florida

Cited by 16 publications

References 11 publications

Geologic controls on the recent evolution of oyster reefs in Apalachicola Bay and St. George Sound, Florida

Geologic controls on the recent evolution of oyster reefs in Apalachicola Bay and St. George Sound, Florida

Unprecedented Historical Erosion of US Gulf Coast: A Consequence of Accelerated Sea‐Level Rise?

The Spatiotemporal Characteristics and Dynamic Changes of Tidal Flats in Florida from 1984 to 2020

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